Ignition-plug.



G. V. NULTE 6.1. E. sMlTH.

IGNITION PLUG.

APPLICATION FILED IULYZG. 1918.

Patented Feb. 4, 19194 I Flug/6 wm em um O Nw vh, ...u wm w f @s nu m JTTOR N E Y.

ltimmeren v. notre, or BELLINGHAM, eno :mains l fracasan.

E. SMITH, BEACH, WASHNGTON'.

ilpceiflcation of Letters Patent.

Patented lich. d, MME.

`Application led July 26, 1918. Serial No. Zillli.

` To all whom t may concern.'

Be it known that we, GEORGE V. NoLTE, a

` l citizen of the United States, residing. at

Bellingham, ,in the county of Whatcom and State otWashington, and JAMESE. SMITH,

a citizen of the United States, residing at Beach, inthe county ofWhatcom and State of `Washington, have invented a new and `usefulIgnition-Plug, of which the following 1o` is a specification.

ur invention relates to improvements in j ignition plugs for use ininterior combustion engines of `the seIni-Diesel type, which re- `qnirethe services of a plug for a fewnnnutes at a time only to make a quickstart; and the" objects of our invention are: first. to

provide an electrically-heated wire ignition l Vplug the, element ofwhich,` when not required in theoperation of the engine, can be finggases within can'readily he removed and replaced D I'normal engineoperation; and third, which shielded from exposure to the rapidly movthecylinder; second, which during is'of "a simple construction especiallysuited 'or small engines.

IWe lhave lbeen grantedfPatent Number 1249,465'011 Dec. 1i, 1917, forObjects Similar '.tothe'first two objects above stated and especiallyadapted to large engines. We attain these objects with the mechanismillustrated in the accompanying drawcylinder ca `Figure l is a plan viewof our plug shown in operative position and having certain yparts brokenaway in order to show others hidden therefby, Fig.'2 is a frontelevation of Fig l in section on a longitudinal medial plane, Fig 3 is aside elevation of Fig. l,

Fig. t isa side elevation of Fig. l having its entire upperlportionbroken away, and showing the fparts in closed ornonvoperativeposition Fig. 5 is a sectional view ofFig. 4 on a plage throug'hlineL10-40, Fig. 6 is a sectional view of Fig. 2 on a plane line 9-9, andFig. 7 is an elevation the electrode. ,g

Similar characters/refer to similar parte throughout.

More particularly' A is-a`portion of the in section. l is a hollow studhavin a c osed lower end protruding into the cy inders interior. ingtransverse holes through the walls of the lower end of stud l within thecylinder. 1b

through 'has two registering holes View of l, 1el .are register-- toengage cylinder' cap A. l is the threaded upper and outer end of stud l.ld is a hexagonal ring boss on stud 1 to provide a wrench hold. le is adeep diametrioal score on the upper side and edges of boss ld. .2 is themetallic jacket of the electrode. 2a is an insulating bushing in acounterbore in the lower end of jacket 2. 2b is aninsulating bushing ina counterloore in the` upper end of the jacket 2 and extends above saidjacket. 2 is a circular nut on 'top of bushing 2b. 2 is a ring 'boss onjacket 2 near its upper end. 3 is the central rod ofthe electrode andhas head 3a on its lower'end bearing against the lower end of bushing2a. The upper end of rod 3 is threaded and on it is screwed `nut 2 tohear on the upper end of bushing 2b. Also on this threaded end isscrewed binding; nut 8b. l is the element, preferably made of refractorywire in the form of a helix. One end of said wire is connecte-d to rodhead 3a and the other end is connected to the lower end of jacket 2; 5is the electrode cage and consists of a tube having a closed lower endand neatly fitted for revolution in hollow stud l. The lower end of cage5 nearly reaches Athe bottom 5a, 5 through its walls adapted toregi-ster with holes l, l8 when in the position 1n revolutionillustrated in Figs. 1, 2 and 6 hut to the out of registry with saidsoles when turned through an angle of o to the position shown in Figs. 4and 5. 5b is a ring hoes oncage 5 near its upper end adapted to hear onthe upper end of stud l. 5 is a threaded flange on the-upper end of saidcagewith which hand wheel 5e is engaged and more securely retained bypin 5d. 5f is a deep diametrical score across the top and sides oi' handwheel 5e which registers with score le in boss ld when holes 5,3a/register with holes l, laas shown in Figs. l, 2, and 6; Ibut isati-ight angles with seid score when said holes are out of registry asshown in Figs. 4' and 5, 6 is a bushingnut screwed into a tapped hole inthe up er side or' hand wheel 5e and hears on ring'- oss 2d. 7 is agland nut engaged with-the threaded end lc of stud l adapted to compresspacking 8 on ring boss 5*.

ln operation, threaded body 1b is engaged in a hole in cylinder A asshown only in Fig. 3, those parts of stud l of said stud and ica' belowsaid.

threaded body protruding within said cyl- Y 2 makes a turning fit iiicage 5, and the joint between the two is sealed by'nut A6 clamping ringboss 2d on flange 5C. When said nut 6 is tightly` screwed down theelectrode is turned with difficulty in the cage, but by easing said nutthe electrode may be revolved freely. As noted, one end of element 4 isconnected to rod 3, which is therefore insulated, while the other end ofsaid element is connected to jacket Q which connects it to the engineframe or ground. One terminal, not shown, of a suitable source ofelectricity, not shown, is connected under binding nut 3", while theother terminal of said source of electricity is connected to the engineframe as usual. The electric circuit of said source of electricity issupplied with a switch as usual. In starting the engine this switchisclosed and hand wheel 5e is turned to cause score 5t to register withscore le when holes 5, 5 register with holes l, l, seeFigs. 1, 2, 3 and(3, 'and element l is exposed to the gases in the engine cylinder asdescribed. But when the.

services of the hot element 4 are no longer required in the properoperation of the engine hand wheel 5e is turned to cause score 5f to beat right angles with score 1e which causes cage 5 to turn through anangle of 90 in stud 1 and holes 5, 5 are turned out of registry withholes 1, la, as shown in Figs. 4 and 5, and element 4 is shut olf fromexposure to the said cylinder gases.

When it is desired to remove electrode 2 during the operation of theengine the battefry terminal undcrnut 3" is removed, hand Wheel 5e isturned to cause score 5f to be at right angles with score l", nut 6 isunsrewed, when said electrode can be removed a` pleasure. To replacesaid electrode the opposite order is followed. This mechanism is alsosuitable for use with a jumpspark element.

tion, what we claim as new and desire t0 secure by Letters Patent is l.In combination, the cylinder of an 1n ternal combustion engine, a hollowstud exigaged in the walls of said engine cylinder with its inner endprotruding' Within the interior of said cylinder, and havingtworegistering holes through its walls within said cylinder; an electrodecage mounted for revolution in said hollow stud having two registeringholes through the walls ofv its lower end, and adapted to be revolved tocause said holes to be in registry with said holes in said stud and alsoadapted to be turned to cause said holes to be out of registry with saidholes in said stud; and an electrode mounted in said cage having anelement of refractory metal connected to its lower end adapted to hangbetween the holes in the lower end of said cage..

2. In combination, the cylinder of'an internal combustion engine; ahollow stud engaged in the walls of said cylinder with its lower endclosed and protruding'into the interior of said cylinder and having tworegistering holes through its walls Withf in said cylinder, and alsohaving a stuflingbox gland on its outer end without said cylinder; anelectrode cage mounted for revolution in said hollow stud having tworegistering holes through its lower end which are adapted to move intoand out of registry with said holesin said stud when said cage isrevolved, and also having a ring boss adapted to bear onthe upper end'ofsaid stud beneath the packing of said stuifing-box gland; an electrodemounted in said cage comprising' a central metallicvrod, an outermetallic jacket insulated from said rod and having a ring boss near itsupper end; a refractory wire one end of which is connected to the lowerend of said rod and the other end of which is connected to the lower endof vsaid jacket adapted to hang between the holes in said cage; and abush nut in the upper end of said electrode cage bearing on the ringboss on said electrode.

GEORGE v. NoLTE. JAMES E. SMITH.

